The Company – What Viavi Does

Viavi Solutions is a network test, measurement, and optical technologies company that provides equipment, software, and services used to validate and optimize telecom, data center, and enterprise networks. It is a critical enabler of network performance across 5G, fiber, cloud, and defense applications.

Financials

Bull Case for VIAV Stock

AI Data Center Networking Complexity
- More complex networks → more testing required
- Potential upside from Ethernet/optical validation
5G Upgrade Cycle Still Not Fully Mature
- Ongoing densification + private networks
High Margin, Underappreciated Business
- 60% gross margin → strong operating leverage if growth returns
Optical Security = Stable Cash Flow
- Sticky, government-driven demand
Potential Multiple Expansion
- If growth reaccelerates → could re-rate as infrastructure enabler

Bear Case for VIAV Stock

Telecom Capex Cyclicality
- Core business depends heavily on carrier spending
- Currently in a weak cycle
Low Structural Growth
- Not a pure AI beneficiary like semis or optics
- Growth remains mid-single digit
Competition from Larger Players
- Keysight dominates high-end testing
- Pricing pressure risk
Limited Operating Leverage Recently
- Revenue flat → margins not expanding
OSP Segment Is Niche
- Not a major growth engine

Management Outlook

we are now also seeing emerging strong demand for our fiber field instruments by hyperscalers and service providers to build, operate, and optimize the next generation of fiber networks to interconnect the data centers
we expect the data center ecosystem revenue momentum to continue through the calendar 2026
40% service provider, 45% data center, around 15% aerospace and defense.

TAM and Growth Outlook

Estimated TAM: $6–8B (network test & measurement + optical security markets)
Expected CAGR: 5–7% over next 3–5 years

Growth drivers:

5G densification & upgrades
Fiber broadband rollout
AI data center networking complexity
Defense / anti-counterfeiting optics

Products and Revenue Mix

Segment	Product / Solution	Description	End Use	% of Revenue (Approx)	Key Competitors
Network & Service Enablement (NSE)	Field Fiber Testers (OTDR, OLTS)	Handheld devices to test fiber quality, signal loss, faults	Fiber deployment & maintenance	~25%	EXFO, Anritsu
	RF & Wireless Test Equipment	Tools for testing 4G/5G radio networks, signal strength, interference	Mobile network optimization	~10%	Keysight, Anritsu
	Lab Validation Systems	High-end systems used by OEMs to validate network equipment (pre-deployment)	Equipment R&D testing	~10%	Keysight
	Network Performance Monitoring Software	Real-time monitoring, analytics, service assurance	Carrier network ops	~8%	Netscout
	Protocol & Packet Testing Tools	Deep packet inspection, protocol validation	Core network / data traffic validation	~5%	Spirent
	Enterprise Network Test Solutions	Tools for enterprises to test LAN/WAN/cloud connectivity	Enterprise IT environments	~5%	Keysight, NetAlly
	Cable & Broadband Test Tools	Testing DOCSIS / cable broadband networks	Cable operators	~4%	EXFO
	Fiber Inspection & Certification Tools	Microscopes, connectors testing tools	Installation QA	~3%	EXFO
Optical Security & Performance (OSP)	Anti-Counterfeiting Optical Features	Security pigments & coatings for banknotes, passports	Currency & government	~15%	De La Rue, SICPA
	3D Sensing Optical Filters	Optical filters used in smartphones (Face ID, LiDAR)	Consumer electronics	~7%	Coherent, II-VI
	Precision Optical Coatings	Custom coatings for defense, aerospace, industrial optics	Defense / space	~5%	Materion
	Industrial Optical Components	Filters, mirrors, lenses for specialized applications	Industrial / scientific	~3%	Edmund Optics

Business Model – How VIAV Makes Money

Hardware sales (primary revenue driver)
→ High-margin specialized testing equipment
Software & recurring services (growing)
→ Network monitoring, assurance, analytics
Optical components (OSP segment)
→ Security features for banknotes + optical filters

Model characteristics:

High gross margin
Moderate recurring revenue
Cyclical demand tied to telecom capex

Customers – Who Buys from Viavi

Telecom operators (AT&T, Verizon, global carriers)
Network equipment vendors (Cisco, Nokia, Ericsson)
Data center / cloud providers (indirect exposure)
Government & defense agencies
Central banks (for anti-counterfeiting tech)

Top Competitors (Direct Competition in Network Testing)

1. Keysight Technologies (KEYS)

High-end lab testing systems
Strong presence in wireless + semiconductor validation

2. EXFO Inc.

Focus on fiber optic testing and field equipment
Strong telecom operator relationships

3. Anritsu Corporation

RF and wireless test equipment
Major player in 5G testing globally

Positioning:

VIAV = mid-to-high tier testing + strong field presence
KEYS = premium / lab / R&D dominant

Founding History of Viavi Solutions

Originated from JDS Uniphase (JDSU), a major optical components company
In 2015, JDSU split into:
- Viavi Solutions (network testing + optical security)
- Lumentum (optical components for telecom/datacom)